Deuteronomy 19:8-10

Amplified Bible

⁸ “If the Lord your God enlarges your border, as He has sworn to your fathers to do, and gives you all the land which He promised to give to your fathers— ⁹ if you keep and carefully observe all these commandments which I am commanding you today, to love the Lord your God, and to walk [that is, to live each and every day] always in His ways—then you shall add three more cities [of refuge] for yourself, besides these three, ¹⁰ so that innocent blood will not be shed [by blood avengers] in your land which the Lord your God is giving you as an inheritance, and blood guilt will not be on you [for the death of an innocent man].